/* 页面整体样式 */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}
h2, h3 {
    color: #4a4a8a;
}
/* 表单样式 */
form {
    margin-bottom: 20px;
    padding: 10px;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
label {
    font-weight: bold;
}
input[type="text"] {
    padding: 8px;
    margin-right: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}
input[type="submit"] {
    padding: 8px 12px;
    color: #fff;
    background-color: #4a4a8a;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}
input[type="submit"]:hover {
    background-color: #3a3a78;
}
/* 表格样式 */
table {
    width: 80%;
    border-collapse: collapse;
    margin-bottom: 30px;
}
th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}
th {
    background-color: #4a4a8a;
    color: #fff;
    text-transform: uppercase;
    font-weight: normal;
}
tr:nth-child(even) {
    background-color: #f9f9f9;
}
tr:hover {
    background-color: #f1f1f1;
}